Calderite is a
mineral
In geology and mineralogy, a mineral or mineral species is, broadly speaking, a solid chemical compound with a fairly well-defined chemical composition and a specific crystal structure that occurs naturally in pure form.John P. Rafferty, ed. ( ...
in the
garnet
Garnets () are a group of silicate minerals that have been used since the Bronze Age as gemstones and abrasives.
All species of garnets possess similar physical properties and crystal forms, but differ in chemical composition. The different s ...
group with the chemical formula (
Mn2+,
Ca)
3(
Fe3+,
Al)
2(
Si O4)
3.
It is dark reddish brown to dark yellowish in color and generally granular massive in form.
[Handbook of Mineralogy]
/ref>
It was named for geologist James Calder who worked on the geology of India. The name was first applied to a rock in manganese deposits in Katkamsandi
Katkamsandi is a village in the Katkamsandi CD block in the Hazaribagh Sadar subdivision of the Hazaribagh district in the Indian state of Jharkhand.
Geography
Location
Katkamsandi is located at .
Area overview
Hazaribagh district is a plat ...
, Hazaribagh district, Bihar
Bihar (; ) is a state in eastern India. It is the 2nd largest state by population in 2019, 12th largest by area of , and 14th largest by GDP in 2021. Bihar borders Uttar Pradesh to its west, Nepal to the north, the northern part of West Be ...
and at Netra, Balaghat district, Madhya Pradesh
Madhya Pradesh (, ; meaning 'central province') is a state in central India. Its capital is Bhopal, and the largest city is Indore, with Jabalpur, Ujjain, Gwalior, Sagar, and Rewa being the other major cities. Madhya Pradesh is the seco ...
, India
India, officially the Republic of India (Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the so ...
.
later transferred to its predominant mineral.[ In 1909 it was described as a mineral from Otjosondu, Otjozondjupa Region, ]Namibia
Namibia (, ), officially the Republic of Namibia, is a country in Southern Africa. Its western border is the Atlantic Ocean. It shares land borders with Zambia and Angola to the north, Botswana to the east and South Africa to the south and ea ...
.
See also
*
References
Manganese(II) minerals
Iron(III) minerals
Calcium minerals
Aluminium minerals
Garnet group
Cubic minerals
Minerals in space group 230
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